page_title: Marcel Grün
hierarchical_section_title: Marcel Grün
caption_attribution_description: Čeština: Český popularizátor kosmonautiky Marcel Grün na 17. sjezdu České astronomické společnosti ve Valašském Meziříčí English: Czech astronautics propagator Marcel Grün at the 17th Congress of the Czech astronomical society
context_page_description: Marcel Grün is a Czech astronomer, teacher, and writer. For over 15 years he worked as the director of the Prague Observatory and Planetarium.
context_section_description: Marcel Grün (born 20 November 1946 in Cheb) is a Czech astronomer, teacher, and writer. For over 15 years he worked as the director of the Prague Observatory and Planetarium.
caption: Marcel Grün na sjezdu České astronomické společnosti v roce 2007
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